FCC ID: U88GRS-1923DC-SPR Repeater

by: GS Instech Co., Ltd. latest update: 2009-06-26 model: GRS-1923DC-SPR

One grant has been issued under this FCC ID on 06/26/2009 (this is one of four releases in 2009 for this grantee). Public details available include internal & external photos, frequency information, and manuals. some products also feature user submitted or linked drivers, troubleshooting guides, instructions, warrantee terms, & password defaults.

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all	frequencies		exhibits	applications
		manual

all exhibits 11
1 ~ 2009-06-26 11

app s				submitted / available
1	Users Manual	Users Manual	pdf	681.96 KiB	/ October 08 2009
1		Cover Letter(s)	pdf
1		External Photos	pdf		/ October 08 2009
1		ID Label/Location Info	pdf
1		Internal Photos	pdf		/ October 08 2009
1		Operational Description	pdf
1		Cover Letter(s)	pdf
1		Test Setup Photos	pdf		/ October 08 2009
1		Cover Letter(s)	pdf
1		Test Report	pdf
1		Parts List/Tune Up Info	pdf

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Users Manual

Users Manual

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681.96 KiB

/ October 08 2009

Sprint User Manual 3G Indoor Repeater 3G Indoor Repeater GRS-1923D-SPR User Manual January, 2009 Version 0.1 1/23

- INDEX -

Sprint User Manual 3G Indoor Repeater 1. SUMMARY................................................................................... 3 2. SYSTEM CONFIGURATION ......................................................... 4 2.1 GSR-1923D-SPR Service Organization ......................................................4 2.2 System Design and Operation....................................................................5 3. SPECIFICATIONS ..................................................................... 11 3.1 System Specifications(Applicable to both Uplink & Downlink)................11 3.2 Electrical and Environmental Specifications ............................................12 3.3 Functions .................................................................................................12 4. SET UP ...................................................................................... 15 4.1 System Set up ..........................................................................................15 4.2 Troubleshooting.......................................................................................19 2/23 Sprint User Manual 3G Indoor Repeater 1. SUMMARY GRS-1923D-SPR is an analog RF repeater, which improves PCS network. GRS-1923D-SPR receives RF signal from BTS and transmits it to the blanked and shadowed area, thus providing and improving voice and image data services. GRS-1923D-SPRs goal is to support BTSs functions proportionately. GRS-1923D-SPR communicates with BTS wirelessly, thus saving additional costs for its maintenance. GRS-1923D-SPR consists of RF/IF part module, Digital Filter module, and I/O & Control module divisions, which are supplied with Alarm LED, thus providing quick and easy maintenance and troubleshooting of the repeater. This manual describes in general structure of GRS-1923D-SPR, its application, maintenance and troubleshooting, installation and operation etc.

-.Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your authority to operate this equipment.

-.Warning: Exposure to Radio Frequency Radiation The radiated output power of this device is far below the FCC radio frequency exposure limits. Nevertheless, the device should be used in such a manner that the potential for human contact during normal operation is minimized. In order to avoid the possibility of exceeding the FCC radio frequency exposure limits, human proximity to the antenna should not be less than 20cm during normal operation. The gain of the antenna for pcs Band must not exceed 12 dBi. Abbreviation PCS : Personal Communication System RF: Radio Frequency BTS: Base Transceiver Station IF: Intermediate Frequency I/O : Input/Output 3/23 Sprint User Manual 3G Indoor Repeater 2. System Configuration 2.1 GRS-1923D-SPR Service Organization GRS-1923D-SPR decreases blanked and shadowed areas and extends cell coverage by re-trans mitting signal. The signal is received from BTS via Antenna directly, thus excluding additional ex penses for signal transmission (like cabling). Service organization of CDMA In-building RF repeat er is shown at the picture below. Donor Antenna is directed to BTS, and being divided at Servic e Antennas are installed in the building and parking place. Pass Loss should be taken into consi deration while dividing and cabling.

<Pic.1> US PCS 1900 Service Organization 4/23 2.2 System Design and Operation 2.2.1 System Design Sprint User Manual 3G Indoor Repeater

<Pic.2> GRS-1923D-SPR Repeater 5/23 Sprint User Manual 3G Indoor Repeater NO

<Pic.3> Internal Design DESCRIPTION ANTENNA PORT PSU MODULE (RS-35-3.3) PSU MODULE (RS-100-9) CONVERTER MODULE AMP MODULE NMS BOARD DIGITAL FILTER ETHERNET BOARD 6/23 Sprint User Manual 3G Indoor Repeater NO

<Pic.4> Outside Port Design DESCRIPTION SERVER ANT PORT DONOR ANT PORT AC POWER PORT CLI MONITOR PORT ETHERNET PORT 7/23 Sprint User Manual 3G Indoor Repeater 2.2.2 Downlink Path Downlink and Uplink Gain Budgets have similar structure. In case of Downlink Path, RF signal is received from Donor Antenna, and through FWD LNA division, then the signal is transferred to IF division, where desirable Band is selected by Digital Filter. Selected Band is transferred to RF division again, and through FWD PAM, after that the signal is transmitted to User through Server Antenna. Two attenuators use for ALC and NF compensation. ALC attenuation range is 20dB, and NF atte nuation range is 10dB in Digital Step Attenuator.

<Pic.5> Downlink Block Diagram 8/23 Sprint User Manual 3G Indoor Repeater 2.2.3 Uplink Path Uplink Path is similar in structure to Downlink Path. In case of Downlink Path, RF signal is received from Server Antenna, and through RVS LNA division, then the signal is transferred to IF division, where desirable Band is selected by Digital Filter. Selected Band is transferred to RF division again, and through RVS PAM, after that the signal is transmitted to BTS through Donor Antenna. Two attenuators use for ALC and NF compensation. ALC attenuation range is 20dB, and NF atte nuation range is 10dB in Digital Step Attenuator.

<Pic.6> Uplink Block Diagram 9/23 2.2.4 US PCS Frequency Selection Sprint User Manual 3G Indoor Repeater

<Pic.7> 1900MHz PCS Band Structure GRS-1923D-SPR has 5MHz, 10MHz, 15MHz, 20MHz Paths in IF division, so any of these bandwi dths can be chosen for providing service. ITEM BANDWIDTH NOTE Band Select 5MHz 10MHz 15MHz 20MHz Any of these bandwidths from 5MHz + 5MHz A to E can be chosen 5MHz + 5MHz + 5MHz 10MHz + 5MHz 15MHz + 5MHz 10/23 Sprint User Manual 3G Indoor Repeater 3. SPECIFICATIONS 3.1 System Specifications(Applicable to both Uplink & Downlink) ITEM Transmit Power SPECIFICATION 23dBm 2.0dBm Frequency Downlink 1930MHz ~ 1975MHz Range Uplink 1850MHz ~ 1895MHz Gain Range 60dB ~ 80dB 50dBc 1.5 : 1 8us REMARK DL/UL both

@ F(edge)1MHz Roll Off VSWR Delay In Band Spurious Emission Out band Spurious Emission

Fc885kHz

Fc1.98MHz

Fc2.25MHz Flatness 45dBc marker to marker 29dB

-45dBc marker to marker 29dB

-55dBc marker to marker 39dB

< -13dBm 3.0dB 5MHz RBW = 1MHz channel power measurement Band Select 5+5MHz or 10MHz 5+5+5MHz or 10+5MHz or 15MHz Non-contiguous Band

(Maximum 3-band) Noise Figure ALC Range 15+5MHz or 20MHz 5dB @ Max Gain 12dB @ Min Gain 20dB, 1dB step Frequency Stability 0.05ppm 11/23 Waveform Quality Factor Output Power Variation over Temperature Sprint User Manual 3G Indoor Repeater

> 0.97 2.0dB 3.2 Electrical and Environmental Specifications ITEM SPECIFICATION REMARK Power & Consumption 100 ~ 240 VAC,60Hz Connector Type Size Weight Reliability, MTBF Enclosure Operating Temperature Rel. Humidity Industry Standards N-type female 340X300X170 max 40 lbs 50,000 hours NEMA4

-10 ~ +50 0% ~ 90%

TIA-97, TIA-98, IS-98D, IS-2000 Regulatory Approvals FCC, Part24 CDN-IC Safety Approvals UL1950 or Equiv 3.3 Functions ITEM Gain Control AGC

(Auto Gain Control) FUNCTIONS Adjustable DL and UL Gain range 60~80dB Display default Gain and current Gain function It always operates in Downlink AGC ON status To maintain same Downlink output power despite flexible input signal strength To add or subtract Attenuation level referring to AGC Power Limit level. Used with the Automatic Setup (Auto Gain Setting) 12/23 Sprint User Manual 3G Indoor Repeater To limit output power as far as default range Used for DAS configuration and when oscillation/isolation is a concern Automatic Gain decrement when output power of repeater is higher ALC than default level

(Auto Level Control) Automatic Gain recovery when output power of repeater is reduced Shutdown when output power is higher than default level in Minimum Gain Automatic Recovery Algorithm conversion after Shutdown status Operate when User control (Only system initialize) Decrease attenuator value for 3dB from minimum gain In case of attenuator value is from 0dB to 3dB when AGS ended

- AGC on (DL)

- Gain balance on

- PAM on

- Shut down on In case of attenuator value is over 3dB when AGS ended

- AGC off (ALC on)

- Gain balance on

- PAM on

- Shutdown on AGS

(Auto Gain Setting) Gain Balance Downlink ATT is applied to Uplink during AGC state Setting and maintenance of output level Additional attenuation to ALC Level Band Select To select either 5MHz/10MHz/15MHz/20MHz Power Monitoring Function Monitoring repeaters output level DL Input control Monitoring Donor ANT input power of DL Automatic Recovery When repeater is shutdown, it periodically recovers output power of repeater then monitors alarming Security Support HTTPS for Web Browser security User authentication through User ID and Password 13/23 Sprint User Manual 3G Indoor Repeater Temperature Monitoring Monitoring temperature of repeater Maximum and minimum set up is possible Shutdown in over temperature Automatic recovery after temperature becomes normal (Hysteresis 10 degree) VSWR Monitoring Monitoring VSWR of Donor ANT Port (Every one and half minute) Reporting VSWR Alarm and Shutdown when the rate is 3.5:1 IP address report via When in PPP reconnection, E-mail which includes HTML to connect to E-mail newly assigned IP Address, reports to operator. DHCP Client Automatic IP assignment DHCP Server Server function for automatic IP assignment Web GUI Remote and local user browser support through Web Browser SNMP Agent NMS report via SNMPv2 Trap LED displays power and operation status on front side of repeater LED Display system Input and Output signal levels are verified by LED bars 14/23 Sprint User Manual 3G Indoor Repeater 4. SET UP 4.1 System Set up 4.1.1 Constitution (Based on 1 set) PARAMETER ITEM QUANTITY Major Accessory US PCS 23dBm case Main power input cable Additional Components Fixable screw Mountable brackets User Manual Manual 1 EA 1 EA 1 SET 1 EA 1 EA 4.1.2 Notice 1) System Power check: Major electricity is AC110V, therefore please input electricity after power verification. 2) Input condition optimization: DL input condition is -57 ~ -37dBm. User should verify input condition of Donor ANT. 3) Isolation check between DONOR/SERVICE ANT: Isolation condition of this equipment is 87dBc (Gain+7dB). User should check its condition before installation.

<Pic.8> MS 3100 A 10SL-3 (Wall Mount Receptacle) & MS3010 A 10SL-3(Plug) 15/23 Sprint User Manual 3G Indoor Repeater 4.1.3 System Set up 1) This equipment is basically wall mountable installation. 2) Once aforementioned process is done, open for service get ready. 3) For grounding, there is a grounding terminal in main power supply side and the grounding terminal on a site and unit should be connected same. 4) System installation work is basically performed more than two people and should be careful for unexpected accident.

<Pic.9> Case Mounts - Step 1 16/23 Sprint User Manual 3G Indoor Repeater

<Pic.10> Case Mounts - Step 2 4.1.4 Open for Service 1) Check points before open a. Verification of system installation status

- Electricity, In/out antenna, coaxial cable connection, equipment mounts status. b. Verification of system accessories

- User should check whole necessary accessories. c. Check receipt signal level

- User should check whether receipt environmental condition is in accordance with system specification, so that system operation will be optimized. 2) Check points after open a. Check by external LED 17/23 Sprint User Manual 3G Indoor Repeater RUN: Green light ON (Off: Green light off) ALARM: Green light in normal status, Red light in alarming SHUT DOWN: Green light in normal status, Red light in Shutdown status Number of LED bar on front side of repeater will show input power signal level Less than -86dBm: LED 1 bar

-85dBm ~ -70dBm: LED 2 bar

-69dBm ~ -54dBm: LED 3 bar

-53dBm ~ -41dBm: LED 4 bar More than -40dBm: LED 5 bar Number of LED bar on front side of repeater will show output power signal level Less than +14dBm: LED 1 bar

+15dBm ~ +16dBm: LED 2 bar

+17dBm ~ +18dBm: LED 3 bar

+19dBm ~ +21dBm: LED 4 bar More than +22dBm: LED 5 bar

<Pic.11> Front LED b. Verification of operation status

- User should verify following status with Output monitoring terminal, which is provided by Spectrum Analyzer

- Output power generation status, system spurious emission characteristics. 18/23 Sprint User Manual 3G Indoor Repeater c. Verification of signal quality and strength in service area

- User should verify signal strength and quality of in-service coverage area by using cell phone or other measuring device. d. Verification of upper-level NMS operation status 4.2 Troubleshooting In case of abnormal operation, technician should diagnose abnormality via remote access or directly connecting to repeater using Ethernet cable. If technician is required to conduct repairs due to major alarm, repeater should first be powered off, and then technician should prepare the proper measurement equipment before trying to fix the problem. In most cases of major repairs, GST will simply replace the unit and conduct repairs at the appropriate facility. 4.2.1 Necessary Testing and Measuring Equipment 1) RF Power Meter: 10Watt Max, 50ohm 2) Signal Generator: 3GHz 3) Spectrum Analyzer: 3GHz 4) Multi-Meter 4.2.2 Notice 1) Troubleshooting should be performed by a trained technician. 2) Parts that seem to be not used should not be disassembled. 3) While troubleshooting, technician should use attenuator to check RF Signal output. 4.2.3 Simple Troubleshooting Method 1) Verify LED Status, both on external LEDs as well as internal module LEDs

- Normal operation: Green light on. Alarming: Red LED on. 2) Technician should check external and internal connectors to ensure that all connections are tightly secure. These connectors should be cleaned regularly. 3) If technician thinks there is a serious problem, call after sales team for over-the-phone technical support. 1-866-9-GST-USA (1-866-947-8872) 19/23 4.2.4 Troubleshooting Guide Check Point Item Sprint User Manual 3G Indoor Repeater Troubleshooting input power System range System gain

-Downlink: -57dBm ~ -37dBm

-Uplink: -57dBm ~ -37dBm

-Downlink: 60dB ~ 80dB

-Uplink: 60dB ~ 80dB Output power at server port

-Downlink: 23dBm 2dB

-Uplink: 23dBm 2dB Check before system operation Check points before open for service Check after system operation Check points after open for service

-Please check quantity of all accessories with specification before you set up

-Fit cable length in accordance with field condition

-Set up 1900MHz CDMA Donor antenna to secure Isolation. (More than 87dBc) Check following status;

-Verify that the antennas are securely mounted and pointed in the correct directions

-Connection status between antennas and RF cable

-Verify that the Repeater is securely mounted

-Proper AC power status

-Grounding status of electrical circuit

-Coaxial cable (RF) construction status

-Connectors and combiners connection status

-Cable connection status against leakage of water 4.2.5 Troubleshooting Guide Related to RF Symptom Check Point Troubleshooting When repeater does work properly not Check electricity connection status cord

-Re-plug in Adapter cord 20/23 DL over-input alarm DL over-output alarm in When alarming UL over-output alarm When output power is no longer problem Temperature alarm RF off Technician should verify category of alarm at the front side of repeater

-Technician should connect antenna with output port of repeater

-Please make sure all connectors are fastened Check the input level Sprint User Manual 3G Indoor Repeater upon Alarm Adapter completing reset Adapter upon completing Alarm Please Check following status;

-Proper maximum output power limit level

-BTS input level (Spectrum Level)

-Input RSSI value on Status Page

-Downlink Attenuation level Please troubleshooting

-Make sure output power is operating normally

-Reset troubleshooting

-Please make sure output level is operating normally

-Please reset Adapter upon completing Alarm troubleshooting Check following status;

-Setting level of maximum temperature limit

-Temperature offset is normal or not

-Circumstances of temperature Reset troubleshooting

-Verify that the HPAs are On

-Reset upon troubleshooting

-When Red light on the Shutdown LED, technician should the alarm via Notebook computer troubleshoot completing completing Adapter Adapter Alarm Alarm upon

-Reconnect the connector

-Change it if the connector is defective

-Increase output power or check input change of BTS side 21/23 In case of dropped call or bad signal after set up In case output Signal wavelength is not shown flat or looks like oscillation Sprint User Manual 3G Indoor Repeater

-If the Gain is different from normal level, please contact A/S team

-It is possible for connectors to get too tight and damage the equipment or throughput

-Please contact installer or service provider upon verification

-Increase output power adjusting attenuation level level of repeater by

-Increase output level of Uplink signal, then set to optimal level.

-Contact network management team or service provider

-If connection is not proper, reconnect cable and connector and then check the output power again Check gain of the unit Cable connector loose input signal Check strength in the service area If input signal strength is not a problem, please check delay of calling time RSSI signal Check strength connection Check between fastened cable antenna

(Signal wavelength should be flat and stable shake if CABLE. it is connection problem) technicians If not, and level change or Input module overheating Please check VSWR of the cable is normal

-Check input level from BTS side.

-Check performance of each module (Diagnosed by A/S team)

-Change to normal Cable 22/23 4.2.6 Troubleshooting Guide Related to NMS Symptom Check Points Sprint User Manual 3G Indoor Repeater Troubleshooting Communication problem Link Fail CLI connection, status check cable CLI connection Check by USB to serial cable

-In case of Ethernet, verify IP addressing, DHCP function, and that cookies are deleted

-Verify that a crossover Ethernet cable is being used

-Make sure 1:1 connection

-Follow instructions in the installation guide for this connection procedure

-Please verify port number of PC communication

-Please check cable connection status 23/23

		frequency	equipment class	purpose
1	2009-06-26	1930 ~ 1975	PCB - PCS Licensed Transmitter	Original Equipment

Application Forms

app s	Applicant Information
1	Effective	2009-06-26
1	Applicant's complete, legal business name	GS Instech Co., Ltd.
1	FCC Registration Number (FRN)	0016367252
1	Physical Address	1385-14, Juan-Dong, Nam-Ku
1		Incheon, N/A 402-200
1		South Korea

app s	TCB Information
1	TCB Application Email Address	m******@ccsemc.com
1	TCB Scope	B1: Commercial mobile radio services equipment in the following 47 CFR Parts 20, 22 (cellular), 24,25 (below 3 GHz) & 27

app s	FCC ID
1	Grantee Code	U88
1	Equipment Product Code	GRS-1923DC-SPR

app s	Person at the applicant's address to receive grant or for contact
1	Name	G**** J******
1	Telephone Number	+8232********
1	Fax Number	+8232********
1	E-mail	j******@gsinstrument.com

app s	Technical Contact
		n/a

app s	Non Technical Contact
		n/a

app s	Confidentiality (long or short term)
1	Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?:	Yes
1	Long-Term Confidentiality Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?:	Yes
1	If so, specify the short-term confidentiality release date (MM/DD/YYYY format)	08/10/2009
	if no date is supplied, the release date will be set to 45 calendar days past the date of grant.

app s	Cognitive Radio & Software Defined Radio, Class, etc
1	Is this application for software defined/cognitive radio authorization?	No
1	Equipment Class	PCB - PCS Licensed Transmitter
1	Description of product as it is marketed: (NOTE: This text will appear below the equipment class on the grant)	Repeater
1	Related OET KnowledgeDataBase Inquiry: Is there a KDB inquiry associated with this application?	No
1	Modular Equipment Type	Does not apply
1	Purpose / Application is for	Original Equipment
1	Composite Equipment: Is the equipment in this application a composite device subject to an additional equipment authorization?	No
1	Related Equipment: Is the equipment in this application part of a system that operates with, or is marketed with, another device that requires an equipment authorization?	No
1	Grant Comments	Repeater. Power output is maximum single channel conducted. Professional installation is required. The antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20 cm from all persons and must not be co-located or operating in conjunction with any other antenna or transmitter except in accordance with FCC multi-transmitter product procedures. Approval is for maximum gain 12 dBi antenna as shown in this filing. Installations with higher gain or additional co-located antennas require RF exposure to be addressed at the time of licensing, as required by the responsible FCC Bureau(s), including antenna co-location requirements of 1.1307(b)(3).
1	Is there an equipment authorization waiver associated with this application?	No
1	If there is an equipment authorization waiver associated with this application, has the associated waiver been approved and all information uploaded?	No

app s	Test Firm Name and Contact Information
1	Firm Name	HCT Co., Ltd.
1	Name	L**** Y****
1	Telephone Number	82-31********
1	Fax Number	82-31********
1	E-mail	y******@hct.co.kr

Equipment Specifications
	Line	Rule Parts	Grant Notes	Lower Frequency	Upper Frequency	Power Output	Tolerance	Emission Designator	Microprocessor Number
1	1	24E		1850	1895	0.199	Amp	F9W
1	2	24E		1930	1975	0.199	Amp	F9W

some individual PII (Personally Identifiable Information) available on the public forms may be redacted, original source may include additional details

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